Create new resources on the server using POST

[aditya-07]

We need to support create using POST in the sync API.

**Describe the bug** Locally created Resources are assigned ID at creation/before saving to the local db. Once this Resource is up-synced, the server assigns a new ID to the resource and disregards the assigned ID (in case of HTTP-POST). The created object is returned in the POST response. Since the lD for local & remote copy are different now, need to update all the local id references with the remote id.

Component
Core library, SDC library, reference app, or SDC gallery app

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[jingtang10]

lowering the priority since we do not use POST any more. we are explicitly supporting PUT for creating resources (for now). it is possible that we will need to add support for POST in the future so keeping this issue open.

[jingtang10]

We have been working on a number of PRs to redesign the upload process in order to support this feature:

• Introduce Patches: changes to be uploaded to the server #2156
• Remove UploadWorkManager #2166
• Add ResourceConsolidator #2137
• Support Uploading Individual requests - Not exposed yet #2121
• Create request and patch packages #2147
• Make POST method accept dynamic URL #2109
• Refactoring UploadRequestGenerator for Upload Sync Redesign #2168

There will be another PR introducing upload strategies and then the PR to update the IDs after POST.

@omarismail94 @anchita-g